MBA Exam

f(x)=f(f(x))=f(x^2)....how many such functions with degree >2 exist??

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MBA Other Question

10 ppl have to give presentation. A, B, C are 3 among the 10 ppl. what are the total no. of ways in which 10 ppl can give presentation if A always give before B and B before C.Discuss..

1) I have solved it...
Let x be the smallest integer such that the number N = (16^x) (5^800) has 805 digits. Then the sum of digits of N is

1) 19
2) 25
3) 4
4) 11